Bug 419234

Is kio-extras installed?

(In reply to David Edmundson from comment #1)
> Is kio-extras installed?

No

Installing it will bring them back

(In reply to popov895 from comment #2)
> (In reply to David Edmundson from comment #1)
> > Is kio-extras installed?
> 
> No
Oh, sorry, this package is installed.

Can confirm. The initially shown selection of wallpapers has no thumbnail shown until I scroll away and back

Created attachment 127022 [details]
.xsession-errors

Here are the errors that appear when working with Desktop Settings window.

I have the same problem on manjaro. Scrolling out of view and then back shows the thumbnails properly that were previously black.

Git commit 492301406a4656fbc6c9a1be0e77e68c5535bf93 by Kai Uwe Broulik.
Committed on 31/03/2020 at 11:35.
Pushed by broulik into branch 'Plasma/5.18'.

[Image Wallpaper] Fix thumbnail generation when model is reloaded in-flight

GHNS Quick Button signals changedEntriesChanged initially even if nothing changed.
While this is a bug that should be fixed in GHNS, the wallpaper model didn't handle the case well,
when the model was reloaded while a preview was being generated.

It looks up whether a preview exists by QUrl and stores a QPersistentModelIndex.
However, when the model is reloaded and it accesses data for the same QUrl, the job might still be in-flight,
but the QPersistentModelIndex is invalid as the model has been reset.

This fixes it by performing all lookups exclusively on QPersistentModelIndex.
The hash lookup is optimized for data() (loads of accesses) with the slower key() lookup being done only
when the less frequently occurring thumbnail generation finishes/fails.
It will now do two preview jobs initially, but at least it shows something again...
FIXED-IN: 5.18.4

Differential Revision: https://phabricator.kde.org/D28420

M  +8    -8    wallpapers/image/backgroundlistmodel.cpp
M  +1    -1    wallpapers/image/backgroundlistmodel.h

https://commits.kde.org/plasma-workspace/492301406a4656fbc6c9a1be0e77e68c5535bf93

Hello, i post in this topic because i use the last plasma desktop package into gentoo (testing), and this bug persist into my installation. How can i correct that?

Look:

zohran@MSI-GS73VR-6RF ~ $ emerge --info
Portage 2.3.100 (python 3.7.7-final-0, default/linux/amd64/17.1/hardened/selinux, gcc-9.3.0, glibc-2.31-r5, 5.7.0-gentoo x86_64)
=================================================================
System uname: Linux-5.7.0-gentoo-x86_64-Intel-R-_Core-TM-_i7-6700HQ_CPU_@_2.60GHz-with-gentoo-2.7
KiB Mem:    16280132 total,   9122868 free
KiB Swap:   20971516 total,  20943100 free
Timestamp of repository gentoo: Wed, 10 Jun 2020 19:30:01 +0000
Head commit of repository gentoo: 42a076d9643c7944058b23fc9641c1f246facd23
sh bash 5.0_p17
ld GNU ld (Gentoo 2.34 p4) 2.34.0
app-shells/bash:          5.0_p17::gentoo
dev-java/java-config:     2.2.0-r4::gentoo
dev-lang/perl:            5.30.3-r1::gentoo
dev-lang/python:          2.7.18::gentoo, 3.7.7-r2::gentoo, 3.8.3::gentoo, 3.9.0_beta3::gentoo
dev-util/cmake:           3.17.3::gentoo
sys-apps/baselayout:      2.7::gentoo
sys-apps/openrc:          0.42.1::gentoo
sys-apps/sandbox:         2.20::gentoo
sys-devel/autoconf:       2.13-r1::gentoo, 2.69-r5::gentoo
sys-devel/automake:       1.15.1-r2::gentoo, 1.16.2::gentoo
sys-devel/binutils:       2.34-r1::gentoo
sys-devel/gcc:            9.3.0-r1::gentoo, 10.1.0::gentoo
sys-devel/gcc-config:     2.3::gentoo
sys-devel/libtool:        2.4.6-r6::gentoo
sys-devel/make:           4.3::gentoo
sys-kernel/linux-headers: 5.7::gentoo (virtual/os-headers)
sys-libs/glibc:           2.31-r5::gentoo
Repositories:

gentoo
    location: /var/db/repos/gentoo
    sync-type: rsync
    sync-uri: rsync://rsync.gentoo.org/gentoo-portage
    priority: -1000
    sync-rsync-verify-max-age: 24
    sync-rsync-verify-jobs: 1
    sync-rsync-verify-metamanifest: yes
    sync-rsync-extra-opts: 

fulgurance-overlay
    location: /var/lib/layman/fulgurance-overlay
    sync-type: laymansync
    sync-uri: https://github.com/fulgurance/fulgurance-overlay.git
    masters: gentoo
    priority: 50

steam-overlay
    location: /var/lib/layman/steam-overlay
    sync-type: laymansync
    sync-uri: https://github.com/anyc/steam-overlay.git
    masters: gentoo
    priority: 50

ACCEPT_KEYWORDS="amd64 ~amd64"
ACCEPT_LICENSE="@FREE"
CBUILD="x86_64-pc-linux-gnu"
CFLAGS="-march=skylake -fcommon -O2 -pipe -mmovbe -mmmx -msse -msse2 -msse3 -mssse3 -msse4.1 -msse4.2 -mpopcnt -mavx -mavx2 -maes -mpclmul -mfsgsbase -mrdrnd -mfma -mbmi -mbmi2 -mf16c -mrdseed -madx -mprefetchwt1 -mclflushopt -mxsavec -mxsaves"
CHOST="x86_64-pc-linux-gnu"
CONFIG_PROTECT="/etc /usr/lib64/libreoffice/program/sofficerc /usr/share/config /usr/share/gnupg/qualified.txt"
CONFIG_PROTECT_MASK="/etc/ca-certificates.conf /etc/dconf /etc/env.d /etc/fonts/fonts.conf /etc/gconf /etc/gentoo-release /etc/revdep-rebuild /etc/sandbox.d /etc/terminfo"
CXXFLAGS="-march=skylake -fcommon -O2 -pipe -mmovbe -mmmx -msse -msse2 -msse3 -mssse3 -msse4.1 -msse4.2 -mpopcnt -mavx -mavx2 -maes -mpclmul -mfsgsbase -mrdrnd -mfma -mbmi -mbmi2 -mf16c -mrdseed -madx -mprefetchwt1 -mclflushopt -mxsavec -mxsaves"
DISTDIR="/var/cache/distfiles"
ENV_UNSET="DBUS_SESSION_BUS_ADDRESS DISPLAY GOBIN GOPATH PERL5LIB PERL5OPT PERLPREFIX PERL_CORE PERL_MB_OPT PERL_MM_OPT XAUTHORITY XDG_CACHE_HOME XDG_CONFIG_HOME XDG_DATA_HOME XDG_RUNTIME_DIR"
FCFLAGS="-march=skylake -fcommon -O2 -pipe -mmovbe -mmmx -msse -msse2 -msse3 -mssse3 -msse4.1 -msse4.2 -mpopcnt -mavx -mavx2 -maes -mpclmul -mfsgsbase -mrdrnd -mfma -mbmi -mbmi2 -mf16c -mrdseed -madx -mprefetchwt1 -mclflushopt -mxsavec -mxsaves"
FEATURES="assume-digests binpkg-docompress binpkg-dostrip binpkg-logs candy config-protect-if-modified distlocks ebuild-locks fixlafiles ipc-sandbox merge-sync multilib-strict network-sandbox news parallel-fetch preserve-libs protect-owned qa-unresolved-soname-deps sandbox selinux sesandbox sfperms strict unknown-features-warn unmerge-logs unmerge-orphans userfetch userpriv usersandbox usersync xattr"
FFLAGS="-march=skylake -fcommon -O2 -pipe -mmovbe -mmmx -msse -msse2 -msse3 -mssse3 -msse4.1 -msse4.2 -mpopcnt -mavx -mavx2 -maes -mpclmul -mfsgsbase -mrdrnd -mfma -mbmi -mbmi2 -mf16c -mrdseed -madx -mprefetchwt1 -mclflushopt -mxsavec -mxsaves"
GENTOO_MIRRORS="ftp://ftp.free.fr/mirrors/ftp.gentoo.org/ http://ftp.free.fr/mirrors/ftp.gentoo.org/ http://gentoo.modulix.net/gentoo/ http://gentoo.mirrors.ovh.net/gentoo-distfiles/ https://mirrors.soeasyto.com/distfiles.gentoo.org/ http://mirrors.soeasyto.com/distfiles.gentoo.org/ ftp://mirrors.soeasyto.com/distfiles.gentoo.org/"
LANG="fr_FR.UTF-8"
LDFLAGS="-Wl,-O1 -Wl,--as-needed"
MAKEOPTS="-j9"
PKGDIR="/var/cache/binpkgs"
PORTAGE_CONFIGROOT="/"
PORTAGE_RSYNC_OPTS="--recursive --links --safe-links --perms --times --omit-dir-times --compress --force --whole-file --delete --stats --human-readable --timeout=180 --exclude=/distfiles --exclude=/local --exclude=/packages --exclude=/.git"
PORTAGE_TMPDIR="/var/tmp"
USE="X acl acpi alsa amd64 audit bluetooth btrfs bzip2 compat crypt cryptsetup custom-cflags custom-optimization dbus device-mapper dhcpcd dri dri3 elogind experimental ffmpeg git glamor gstreamer hardened iconv ipv6 jpeg kde kms libtirpc lto lvm mp3 mp4 mtp multilib ncurses networkmanager nls nptl ogg open_perms opengl openmp pam pcre peer_perms phonon pie plasma png policykit pulseaudio readline seccomp selinux semantic-desktop split-usr ssl ssp svg tiff ubac udev udisks unconfined unicode uvm v4l vaapi vdpau vorbis vulkan wayland wifi wireless x264 xattr xtpax zlib" ABI_X86="32 64" ADA_TARGET="gnat_2018" ALSA_CARDS="hda-intel" APACHE2_MODULES="authn_core authz_core socache_shmcb unixd actions alias auth_basic authn_alias authn_anon authn_dbm authn_default authn_file authz_dbm authz_default authz_groupfile authz_host authz_owner authz_user autoindex cache cgi cgid dav dav_fs dav_lock deflate dir disk_cache env expires ext_filter file_cache filter headers include info log_config logio mem_cache mime mime_magic negotiation rewrite setenvif speling status unique_id userdir usertrack vhost_alias" CALLIGRA_FEATURES="karbon sheets words" COLLECTD_PLUGINS="df interface irq load memory rrdtool swap syslog" CPU_FLAGS_X86="aes avx avx2 f16c fma3 mmx mmxext pclmul popcnt sse sse2 sse3 ssse3 sse4_1 sse4_2" ELIBC="glibc" GPSD_PROTOCOLS="ashtech aivdm earthmate evermore fv18 garmin garmintxt gpsclock greis isync itrax mtk3301 nmea ntrip navcom oceanserver oldstyle oncore rtcm104v2 rtcm104v3 sirf skytraq superstar2 timing tsip tripmate tnt ublox ubx" GRUB_PLATFORMS="efi-64" INPUT_DEVICES="libinput synaptics" KERNEL="linux" L10N="fr fr-FR" LCD_DEVICES="bayrad cfontz cfontz633 glk hd44780 lb216 lcdm001 mtxorb ncurses text" LIBREOFFICE_EXTENSIONS="presenter-console presenter-minimizer" LLVM_TARGETS="NVPTX" OFFICE_IMPLEMENTATION="libreoffice" PHP_TARGETS="php7-2" POSTGRES_TARGETS="postgres10 postgres11" PYTHON_SINGLE_TARGET="python3_7" PYTHON_TARGETS="python2_7 python3_7" RUBY_TARGETS="ruby27" USERLAND="GNU" VIDEO_CARDS="intel i965 nvidia" XTABLES_ADDONS="quota2 psd pknock lscan length2 ipv4options ipset ipp2p iface geoip fuzzy condition tee tarpit sysrq steal rawnat logmark ipmark dhcpmac delude chaos account"
Unset:  CC, CPPFLAGS, CTARGET, CXX, EMERGE_DEFAULT_OPTS, INSTALL_MASK, LC_ALL, LINGUAS, PORTAGE_BINHOST, PORTAGE_BUNZIP2_COMMAND, PORTAGE_COMPRESS, PORTAGE_COMPRESS_FLAGS, PORTAGE_RSYNC_EXTRA_OPTS

zohran@MSI-GS73VR-6RF ~ $ eix plasma-desktop
[I] kde-plasma/plasma-desktop
     Available versions:  (5) 5.18.5-r1^t (~)5.19.0^t
       {debug +fontconfig +handbook ibus scim +semantic-desktop test}
     Installed versions:  5.19.0(5)^t(03:23:18 11/06/2020)(fontconfig handbook semantic-desktop -debug -ibus -scim -test)
     Homepage:            https://kde.org/plasma-desktop
     Description:         KDE Plasma desktop

*** Bug 424091 has been marked as a duplicate of this bug. ***